Machine for cutting fan belts or the like



March 22, 1927.

E. D. PUTT ET AL MACHINE FOR CUTTING FAN BELTS OR THE LIKE Filed April 2. 1923 #4 sheets-sheet 1 March 1927' E. D. PUTT ET AL MACHINE FOR CUTTING FAN BELTS OR THE LIKE Filed April 2, 1923 4 Sheets-Sheet 2 March 22, 1927.

E. D. PUTT ET'AL MACHINE FOR CUTTING FAN BELTS OR THE LIKE Filed April 2. 1923 4 Sheets-Sheet 5 March 1927' E. D. PUTT ET AL MACHINE FOR CUTTiNG FAN BELTS OR THE LIKE Filed April 2. 1923 4 Sheets-Sheet 4.

tion of the shaft 32. A groove or slot 42 is cut on the inside of the cylinder 20 for the reception of the end of the knife blade.

The cam 41is provided with a series of gear teeth 43, which engage a rack 44 formed over the outer end of a longitudinally reciprocable rod 45 mounted in the sleeve The rear end of the rod extends beyond the gear 31 and is provided with a cap 45 between which and the gear is located an expansion spring 46. A head 47 on the rod, contacting the shaft 32, limits the inward movement of the rod. The end of the lever 19 bears on the cap 45 To the front of the carriage 26 is secured a ring 48 which is arranged to contact the front end of the cylinder and stop the forward advance of the carriage and thus position the knife at the proper point with respect to the cylinder, acting as a gage for determining the Width of the fan belt.- A strap 49 may be secured to the rear of the knife carriage and causes the lever 19 to withdraw the carriage as will be understood.

The operation of the apparatus is as follows. A cylinder of fabric and rubber or other material is placed within the cylinder 20 and is projected beyond the end of the cylinder. The interior of the cylinder may be roughened slightly to prevent turning of the fabric therein. The carriage being withdrawn, as shown in Figure 1, the operator depresses the treadle 17 which engages the single operation clutch rocking the lever 19. This exerts an inward movement on the rod 45, but the spring 46 is sufficiently strong so that the carriage will be moved forward without compressing the spring until the gage 48 strikes the end of the cylinder 20. In the meantime the ring 48 has engaged the end of the cylinder of fabric and pressed it back until flush with the end of the cylinder, at which time also the knife head is within the cylinder with the knife retracted at the line of the groove 42. The continued movement of the lever 19 now pushes the rod 45 forward and the rack 44 rotates the cam and projects the knife outwardly to perform the cut, the knife head being rotated during the entire operation by the motor 29 at a sufficient rate of speed to enable the cut to be completed. The lever 19 is now withdrawn and the can riagenioves backwardly to its open position. The cylinder of fabric is then pushed forwardly, discharging the cut fan belt down the delivery chute 50, and is ready for a new cut.

It is obvious that changes and modifications may be made as desired. The machine is adaptable for rapid and satisfactory operation, and while it is shown as limited to one size of belt, it may be adjusted to belts of various thicknesses, as will be understood. What we claim is:

1. In a machine for cutting belts or the like, a holder for supporting an uncut cylinder so as to be fed thereon, a reciprocating carriage movable toward and from the holder, and a rotary knife supported on said carriage.

2. In a machine for cutting belts or the like, a holder for supporting an uncut cylinder so as to be fed thereon, a knife carriage, a rotary knife supported on the carriage, and means to cause the holder and carriage to approach one another axially of the knife.

3. In a machine for cutting belts or the like, a holderfor exteriorly supporting an uncut cylinder, a knife carriage, a knife supported on said carriage so as to be radially movable-within the cylinder in the holder, means for moving the knife in a circular path, and means for projecting the knife into the cylinder.

4. In a machine for cutting belts or the like, a holder for supporting an uncut cylinder, a knife carriage, a knife supported on said carriage interiorly of the cylinder in the holder, means for moving the knife in a circular path, and means for projecting the knife outwardly into the cylinder in the holder.

5. In a machine for cutting belts or the like, a holder for supporting an uncut cylinder, a knife carriage movable toward and from said holder, a knife supported on said carriage and normally positioned interiorly of the cylinder in the holder, and means for projecting the knife outwardly of the carriage.

6. In a machine for cutting belts or the like, a holder for supporting an uncut cylinder, a knife carriage movable toward and from said holder, a knife supported on said carriage and normally positioned interiorly of the cylinder in the holder, means for projecting the knife outwardly of the carriage, and means for moving the knife in a circular path.

7. In a machine for cutting belts or the like, a support for a cylinder of material, a knife carriage movable toward and from said support, a continuously rotated head on said carriage, a knife on said head, and means for moving the knife radially of the head.

8, In a machine for cutting fan belts or the like, a support for a cylinder of material, a knife carriage movable toward and from said support, a continuously rotated head on said carriage, a knife on said head, and single operative means to move the carriage and then to move the knife radially of the head.

9. In a machine for cutting fan belts or the like, a support for a cylinder of material, a knife carriage movable toward and from said support, a stop for said carriage, a continuously rotated head on said carriage, a

.lcnife movable vradiallyof the head, and a single operative means to move the carriage until arrested by the stop and then to more the knife radially of the head.

10. In a machine for cutting fan belts or the like, a support for a cylinder of material, a carriage movable toward and from said support, a rotating knife head on said carriage, a knife movable radially of the head and intothe material, a gage on said carriage at the rear of the knife and adapted to contact the support, and means to move the carriage with the knife Withdrawn until the stop is operative and then to project the knife into the material.

11. In a machine for cutting fan belts or the like, a support for a cylinder of material, a knife head, the support and the knife head being movable relatively to one another, means for rotating the knife head, a radially movable knife on said head, a: stop device to limit the approach of the material and the knife head, and means to project the knife into the material.

12. In a machine for cutting belts or the like, a cylinder for exteriorly supporting a cylinder of material, a continuously rotating knife head movable on the axis of the material on said support to a position interiorly thereof, a knife, and means for projecting the knife into the material on said support While the headis being rotated.

13. In a machine for cutting belts or the like, a cylinder for exteriorly supporting a cylinder of material, a continuously rotating knife head movable on the axis of the material on said support, a stop to limit the movement of the head in a position within the cylinder on said support, a knife radially movable of the head, and means to retain the knife in a position Within the head and to project it outwardly of the head after axial movement thereof has been'arrested.

14. In a machine for cutting fan belts or the like, a support for a cylinder of material, and a continuously rotating knife carrier movable simultaneously in a circular path about the axis of the cylinder on said support and in a straight line along said axis,

said knife carrier being also movable radial ly of the cylinder on said support.

15. In amachine for cutting fan belts or the like, a support for a cylinder of material, a knife, means to move said knife in a circular path about the axis of the cylinder on said support, and means to move said knife radially and axially of the cylinder on said support.

16. In a machine for cutting cylinders of material, a knife, a support for a cylinder, means to move said knife in a circular path about the axis of the cylinder on said sup port, and means to move the knife selectively in an axial or radial direction of said cylinder on said support.

17. In a machine for cutting cylinders, a tubular support for the exterior of'the cylinder, a carriage movable to and from the support, a rotating shaft on the carriage, a stop on the carriage, a knife head carried by the shaft forwardly of said stop, a radially mov able knife on said head, a cam adapted to actuate the knife, a longitudinally slidable rod connected with said cam, spring devices to normally retract the rod, and lever mechanism contacting the rod.

18. In a machine of the class described, means for exteriorly supporting a holloW cylinder so that it may be fed thereon, and a rotary knife radially movable Within said means so as to intermittently cut short cylinders from said cylinder and permit feeding of the cylinder in said means.

19. Apparatus for cutting fan belts or the like comprising a knife, a hollow cylindrical member in Which a cylinder of fabric may be inserted, means whereby the member and said knife may be relatively shifted the thickness of a belt to position the knife within the fabric cylinder, means for relatively shifting the knife and member to project the knife into said fabric cylinder and means for relatively rotatingthe knife and said member to perform the cutting operation.

EDWARD D. PUTT. HORACE D. STEVENS. 

